MLM vs PPG: Correlation
Measured on weekly returns over the past three years, Martin Marietta Materials (MLM) and PPG Industries (PPG) carry a correlation of 0.50, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MLM and PPG?
Over the past 3 years, MLM and PPG moved with a correlation of 0.50, which is moderate. The relationship has been stable: the 1-year correlation (0.59) sits close to the 3-year figure. Over 5 years the correlation is 0.55, and the annualized covariance of weekly returns is 307.4 %².
Among the 36 assets we track against MLM, PPG ranks #20 by 3-year correlation. The last year tells two different stories: PPG led by 17.6 percentage points, -13.8% for MLM against +3.8% for PPG. Across three years, the rolling one-year figure varied moderately, from 0.29 to 0.65.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
MLM vs PPG: side by side
| MLM (Martin Marietta Materials) | PPG (PPG Industries) | |
|---|---|---|
| 1-year return | -13.8% | +3.8% |
| 5-year return | +42.4% | -22.0% |
| Volatility (ann.) | 23.9% | 25.5% |
| Beta vs S&P 500 | 0.85 | 0.90 |
| Max drawdown (3Y) | -26.8% | -37.4% |
| Market cap | $37.5B | $25.2B |
| P/E (trailing) | 34.4 | 16.4 |
| Dividend yield | 0.62% | 2.48% |
| Sector / category | Materials | Materials |
Year-by-year returns
| Year | MLM | PPG |
|---|---|---|
| 2022 | -22.7% | -25.7% |
| 2023 | +48.6% | +21.2% |
| 2024 | +4.1% | -18.5% |
| 2025 | +21.3% | -12.0% |
| 2026 | -14.9% | +12.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MLM and PPG good diversifiers for each other?
To a limited degree. At 0.50 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between MLM and PPG?
The MLM/PPG correlation stands at 0.50 on a 3-year window (1 year: 0.59, 5 years: 0.55), computed from weekly returns as of 2026-08-27.
Is PPG a good diversifier for MLM?
To a limited degree. At 0.50 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.50 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/mlm-vs-ppg.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/mlm-vs-ppg/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: MLM correlations · PPG correlations
